1. Department of Surgery, University of Zambia School of Medicine, Zambia
2. Department of Surgery, University Teaching Hospital, Zambia
3. Department of Cardiothoracic Surgery, Weill-Cornell/NewYork Presbyterian Hospital, USA
4. Department of Pathology and Microbiology, University of Zambia School of Medicine, Zambia
5. Countess of Chester NHS Foundation Trust, University of Liverpool, UK